Exploration
what is an example of technology astronomers use to explore space?
telescopes, satellites, space probes, spectroscopes
are galaxies moving toward each other or away from each other?
away from each other due to the expansion of the universe
scientists estimate the universe is about _______ billion years old
13.8
spherical region where globular clusters are located; surrounds the Milky Way's nuclear bulge and disk
halo
Weighing around eight pounds, this is the human body's largest organ?
skin
this type of telescope uses mirrors to focus light rays
reflecting telescope
curved arms that make them look like a pinwheel is what type of galaxy
spiral
Rank the following from smallest to largest:
Galaxy, Solar system, Universe, Planet, Star
planet, star, solar system, galaxy, universe
invisible material thought to be made up of a form of subatomic particle that interacts only weakly with other matter
dark matter
M&M’S Fruit Chews would eventually become what popular candy?
starburst
What is the international Space Station
orbits earth every 93 minutes, crews stay up for weeks or months at a time, primary goal is scientific research
what type of galaxy is the milky way?
spiral
massive balls of hot gas (mostly hydrogen and helium)
stars
gigantic threadlike or sheetlike cluster of galaxies that is hundreds of millions of light years in size
supercluster
What is the only food that can never go bad?
honey
which rover is still on mars?
curiosity
what is an irregular galaxy?
looks like blobs, thought to be formed by two or three galaxies crashing into each other
who developed relativity, showing universe could expand
albert einstein
weak radiation that is left over from the early, hot stages of the Big Bang expansion of the universe
cosmic background radiation
The first iPhone was released in what year?
2007
This instrument collects data in places too dangerous for humans
space probes
What is a galaxy?
large system of stars, gas, and dust held together by gravity
Explain the expanding universe theory
galaxies are moving away from us, discovered by Edwin Hubble in the 1920's
theory that proposes that the universe began as a single point and has been expanding ever since
big bang theory
Which U.S. state is known as the “Land of 10,000 Lakes?”
Minnesota